有限元法在大跨度船闸结构内力分析中的应用

Application Research of Finite Element Method in Internal Force Analysis of Large Span Shiplock Structure

针对大跨度船闸结构刚度差异较大、荷载分布不均匀的特点,采用传统结构力学方法进行简化分析可能存在一定误差。本文结合宁波某大跨度船闸工程实例,采用有限元软件对船闸闸首结构进行数值仿真分析,研究闸首结构的应力、变形。研究结果表明,有限元法能直观反映出船闸闸首各部位的应力、变形分布规律,同时经应力积分得到的内力成果可直接用于配筋计算,为类似复杂水工结构的精细化设计提供参考。

In view of the big difference of stiffness and uneven load distribution of large-span ship lock structure,there may be some errors in the simplified analysis by traditional structural mechanics method.In this paper,combined with a large-span ship lock project in Ningbo,the finite element software was used to carry out numerical simulation analysis of the lock head structure,and the stress and deformation of the lock head structure were studied.The results show that the finite element method can intuitively reflect the stress and deformation distribution of the various parts of the lock head.At the same time,the internal force results obtained by stress integration can be directly used for reinforcement calculation,which provides reference for the fine design of similar complex hydraulic structures.